The photo and thermo decomposition kinetics of diphenylamine diazoresin in water?ethanol water and methanol water has been investigated by spectrophotometry. The velocity of photo decomposition is higher than that of ...The photo and thermo decomposition kinetics of diphenylamine diazoresin in water?ethanol water and methanol water has been investigated by spectrophotometry. The velocity of photo decomposition is higher than that of thermo decomposition in the same solvent.展开更多
The batch removal of Cu(II) from aqueous solution using m-phenylene diamine-furfural (phdm-fu) resin under different experimental conditions was investigated in this study. The influences of initial Cu(II) ion c...The batch removal of Cu(II) from aqueous solution using m-phenylene diamine-furfural (phdm-fu) resin under different experimental conditions was investigated in this study. The influences of initial Cu(II) ion concentration (10 to 120 ppm ), pH (4 to 8) and time have been reported. Adsorption of Cu(II) is highly pH dependent and the results indicate that the optimum pH for the removal was found to be 6. The experimental equilibrium adsorption data are tested for Langmuir, Freundlich, Tempkin and Dubinin- Rodushkevich (D-R) equations. Results indicate that all isotherm are applicable except D-R isotherm which is not applicable . Adsorption kinetics data were modeled using the pseudo-first and pseudo-second order and intraparticle diffusion models. Results show that the pseudo-second order kinetic model was found to correlate the experimental data well.展开更多
文摘The photo and thermo decomposition kinetics of diphenylamine diazoresin in water?ethanol water and methanol water has been investigated by spectrophotometry. The velocity of photo decomposition is higher than that of thermo decomposition in the same solvent.
文摘The batch removal of Cu(II) from aqueous solution using m-phenylene diamine-furfural (phdm-fu) resin under different experimental conditions was investigated in this study. The influences of initial Cu(II) ion concentration (10 to 120 ppm ), pH (4 to 8) and time have been reported. Adsorption of Cu(II) is highly pH dependent and the results indicate that the optimum pH for the removal was found to be 6. The experimental equilibrium adsorption data are tested for Langmuir, Freundlich, Tempkin and Dubinin- Rodushkevich (D-R) equations. Results indicate that all isotherm are applicable except D-R isotherm which is not applicable . Adsorption kinetics data were modeled using the pseudo-first and pseudo-second order and intraparticle diffusion models. Results show that the pseudo-second order kinetic model was found to correlate the experimental data well.